Performance of YBa2Cu3O7-δ-La0.6Sr0.4Co0.2Fe0.8O3-δ composite cathode for intermediate-temperature solid oxide fuel cells

La0.5Ba0.5CuxFe1−xO3−δ as cathode for high-performance proton-conducting solid oxide fuel cell

“…Ba2YCu3O7- (BYC) has been studied as a cathode for an H-SOFC, and the Fe 3+/4+ as a donor to dopant on Cu 2+/3+ was used to increase its oxygen content [20,21]. RBaCuMO5 (R=rareearth element, M=Fe and Co) having a layered perovskite-type structure [22,23] was reported to facilitate oxygen diffusion and further enhance the cathode performance of the SOFC [24][25][26]. The increase of iron ions content can increase the oxygen vacancy (VO •• ) concentration of the material, and the lower bond energy of Cu-O compared with Fe-O bonds reduces the bonding strength of oxygen ions, making it easier to migrate, thereby increasing oxygen ions permeability [12].…”